<template>
	<view>
		<!-- 自定义搜索组件 -->
		<!-- <my-search :bgcolor="'#102b6a'" :radius="15"></my-search> -->
		<my-search @click="gotoSearch"></my-search>
		<view class="scroll-view-container">
			<!-- 左侧滑动区域 -->
			<scroll-view scroll-y="true" :style="{height:wh + 'px'}" class="left-scroll-view">
				<block v-for="(item,i) in cateList" :key="i">
					<view :class="['left-scroll-view-item',i === active ? 'active' : ''] " @click="activeChanged(i)">{{item.cat_name}}</view>
				</block>
			</scroll-view>
			<!--右侧滑动区域-->
			<scroll-view scroll-y="true" :style="{height: wh + 'px'}" :scroll-top="scrollTop">
			        <view class="cate-lv2" v-for="(item2, i2) in cateLevel2" :key="i2">
			          <!-- 二级分类的标题 -->
			          <view class="cate-lv2-title">/ {{item2.cat_name}} /</view>
			          <!-- 当前二级分类下的三级分类列表 -->
			          <view class="cate-lv3-list">
			            <!-- 三级分类的Item项 -->
			            <view class="cate-lv3-item" v-for="(item3, i3) in item2.children" :key="i3" @click="gotoGoodsList(item3)">
			              <!-- 三级分类的图片 -->
			              <image :src="item3.cat_icon"></image>
			              <!-- 三级分类的文本 -->
			              <text>{{item3.cat_name}}</text>
			            </view>
			          </view>
			        </view>
			      </scroll-view>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				//当前设备可用的高度
				wh:0,
				cateList:[],
				active:0,
				//二级分类列表
				cateLevel2:[],
				scrollTop:0
			};
		},
		onLoad() {
      const sysInfo = uni.getSystemInfoSync()
	
	this.wh = sysInfo.windowHeight
      // this.wh = sysInfo.windowHeight - 50

      this.getCateList()
    },
    methods:{
	    // 获取分类列表的数据
	         async getCateList() {
	           const { data: res } = await uni.$http.get('/api/public/v1/categories')
	           if (res.meta.status !== 200) return uni.$showMsg()
	           this.cateList = res.message
	   
	           // 为二级分类赋值
	           this.cateLevel2 = res.message[0].children
	         },
	         activeChanged(i) {
	           this.active = i
	   
	           // 重新为二级分类赋值
	           this.cateLevel2 = this.cateList[i].children
	   
	           this.scrollTop = this.scrollTop === 0 ? 1 : 0
    },
    //跳转商品页面
   gotoGoodsList(item) {
           uni.navigateTo({
             url: '/subpkg/goods_list/goods_list?cid=' + item.cat_id
           })
         },
	   gotoSearch(){
		   uni.navigateTo({
		   	url:'/subpkg/search/search'
		   })
	   }
	}
	}
</script>

<style lang="scss">
	
 .scroll-view-container {
    display: flex;

    .left-scroll-view {
      width: 120px;

      .left-scroll-view-item {
        background-color: #F7F7F7;
        line-height: 60px;
        text-align: center;
        font-size: 12px;

        &.active {
          background-color: #FFFFFF;
          position: relative;

          &::before {
            content: ' ';
            display: block;
            width: 3px;
            height: 30px;
            background-color: #102b6a;
            position: absolute;
            top: 50%;
            left: 0;
            transform: translateY(-50%);
          }
        }
      }
    }
  }

  .cate-lv2-title {
    font-size: 12px;
    font-weight: bold;
    text-align: center;
    padding: 15px 0;
  }

  .cate-lv3-list {
    display: flex;
    flex-wrap: wrap;

    .cate-lv3-item {
      width: 33.33%;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      margin-bottom: 10px;

      image {
        width: 60px;
        height: 60px;
      }

      text {
        font-size: 12px;
      }
    }
  }
</style>
